Logiem
Level 1 (0 points)

Q: unable to bootup after Yosemite install. have to keep shutting down from rear button. it does come on after a few times but then hangs at user login again. If you get in it is great. Seems faster than Mavericks but there is some sort of issue, bouts

unable to bootup after Yosemite install. have to keep shutting down from rear button. it does come on after a few times but then hangs at user login again. If you get in it is great. Seems faster than Mavericks but there is some sort of issue, bootup /login.

iMac (27-inch, Late 2013)

Posted on Oct 20, 2014 4:52 AM

Close
Logiem

Q: unable to bootup after Yosemite install. have to keep shutting down from rear button. it does come on after a few times but then h ... more

  • All replies
  • Helpful answers

  • by Ralph Landry1,

    Ralph Landry1 Oct 20, 2014 4:55 AM in response to Logiem
    Level 8 (41,782 points)
    Oct 20, 2014 4:55 AM in response to Logiem

    You might want to restart holding the Command and R keys so you start on the recovery HD, then from Utilities on the menu bar choose Install Mac OS X and let it reinstall Yosemite.  That does not remove any settings or content, just replaces the Mac OS X files and should replace whatever is broken.

  • by Logiem,

    Logiem Logiem Oct 20, 2014 5:11 AM in response to Ralph Landry1
    Level 1 (0 points)
    Oct 20, 2014 5:11 AM in response to Ralph Landry1

    Hi Ralph

    Have already done that, no improvement.

  • by DarkPilgrim,

    DarkPilgrim DarkPilgrim Oct 20, 2014 5:41 AM in response to Logiem
    Level 1 (0 points)
    Oct 20, 2014 5:41 AM in response to Logiem

    I agree. After using CMD R I am able to install only Maverick again. So, I have the same problem but I finished just at the beginning - so, kernel panic and no able to even install Yosemite.:-(

  • by Logiem,

    Logiem Logiem Oct 20, 2014 5:45 AM in response to DarkPilgrim
    Level 1 (0 points)
    Oct 20, 2014 5:45 AM in response to DarkPilgrim

    I was able to reinstall Yosemite but it only cam up with the same result, gaining access to the mac is time consuming. There is not heavy on my mac, it is relatively new and was operating with Mavericks prior to the upgrade. All worked well before and access on bouts and login was ok. Now a nightmare gaining access. Have checked login items etc under users and groups and there is nothing there either. A real problem.

  • by NikCh,

    NikCh NikCh Oct 20, 2014 6:16 AM in response to Logiem
    Level 1 (5 points)
    Oct 20, 2014 6:16 AM in response to Logiem

    I had a similar problem on an iMac  Found that if I removed my McAfee anti-virus (which I didn't really need anyway) by booting into Safe Mode (hold shift after a restart), and running its uninstall program it all worked.

  • by WmDub,

    WmDub WmDub Oct 20, 2014 6:36 AM in response to Logiem
    Level 1 (0 points)
    Oct 20, 2014 6:36 AM in response to Logiem

    Had the similar problem booting up after installing Yosemite - wouldn't boot up fully, stalled half way during boot up. so I did the Command+R to recover my last Time Machine save. I won't be going back to Yosemite any time soon. I thought Apple were better than this.

  • by WmDub,

    WmDub WmDub Oct 20, 2014 6:40 AM in response to NikCh
    Level 1 (0 points)
    Oct 20, 2014 6:40 AM in response to NikCh

    So youre saying McAfee antivirus is the problem with rebooting Yosemite?

  • by WmDub,

    WmDub WmDub Oct 20, 2014 6:50 AM in response to Ralph Landry1
    Level 1 (0 points)
    Oct 20, 2014 6:50 AM in response to Ralph Landry1

    Yes tried reinstalling Yosemite but didn't work for me so I went back to recovery in Time Machine's last save.

  • by HULK1223,

    HULK1223 HULK1223 Oct 20, 2014 6:53 AM in response to Logiem
    Level 1 (4 points)
    Mac OS X
    Oct 20, 2014 6:53 AM in response to Logiem

    Had a similar problem. When I removed McAfee as suggested by someone in this community it solved the problem and Yosemite now works.

  • by NikCh,

    NikCh NikCh Oct 20, 2014 7:10 AM in response to WmDub
    Level 1 (5 points)
    Oct 20, 2014 7:10 AM in response to WmDub

    Well, I'm saying removing McAfee solved my problem! In fact, by way of experiment, I re-installed it after I'd got everything going (risky!) - and it caused a problem again - so I removed McAfee using the uninstall and all seems fine.  Don't know if it's just McAfee or other anti-virus programs (which they say you don't need with Mac OS X anyway)>

  • by Logiem,

    Logiem Logiem Oct 20, 2014 7:20 AM in response to HULK1223
    Level 1 (0 points)
    Oct 20, 2014 7:20 AM in response to HULK1223

    Hi Hulk1223

     

    Tried that and it works, got in right away. Now antivirus package problem eh!

    Many thanks for your help

  • by WmDub,

    WmDub WmDub Oct 22, 2014 12:30 PM in response to NikCh
    Level 1 (0 points)
    Oct 22, 2014 12:30 PM in response to NikCh

    Looks like it might well be McAfee is also my problem must un-install it right away. Thanks

  • by Runelight,

    Runelight Runelight Nov 2, 2014 1:00 AM in response to NikCh
    Level 1 (0 points)
    Nov 2, 2014 1:00 AM in response to NikCh

    My friend was freaking out that her MacBook would be stuck at the 40% mark when booting up. Her applications would start freezing, and other extensions were giving her problems. After spending hours on finding a solution to this, a couple of people decided that downgrading to Mavericks would be the best bet. When I was installing Mavericks to make an install flash drive, I noticed she had McAfee installed. I remember reading posts about antivirus softwares giving problems for Yosemite.


    I booted into safe mode, uninstalled McAfee, and she could finally boot-up fine and have no other problems. Thank you!

  • by Ggggeorge,

    Ggggeorge Ggggeorge Nov 26, 2014 1:35 PM in response to NikCh
    Level 1 (0 points)
    Nov 26, 2014 1:35 PM in response to NikCh

    Knock on wood, this seems to have been my problem as well.  I stumbled on this thread after dealing with this ridiculously-long boot times for the past several weeks.

     

    I just reinstalled McAfee Antivirus and my Macbook Air booted up in less than 1 minute.  No more hanging on the boot-up progress bar.  No more hanging after I click on my user's avatar on the log-in screen.  Bootup would often take 5+ minutes and sometimes never complete.

     

    This has been SUPREMELY frustrating.

     

    THANK YOU SO MUCH FOR POSTING YOUR RESPONSE!!!